Automatic duplicating-machine



T. A. STEl NMETZ.

AUTOMATIC DUPLICATING MACHINE.

APPLICATION FILED SEPT, I I, 1920- Patented Dec. 27, 1921.,

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WITNESSES B y A TTORNE Y8 l T. A. STEINMETZ. AUTOMATIC DUPLICATIINGMACHINE.

APPLICATION FILED SEPT. 11, I920- L 2 9 2 1 T E 7 M 2 A 1 D m a W m r d3 2 I f -B LA DIV. H! x 0 2]. Q v m a 5 a W t 6 m a vP m A W 4 7 3 1 5"a 8 m f l 2 7 6 y w 1 w. 2 2 r M L w u u L L x w fi El f 422% y s H W r7 2 0 m 4 H a a of v z: 1 w F K. E A /7 l 1 f; x r 6 5 m IN l/E/V TOR77/50. A. 5 TE/NMETZ WITNESSES M5711) ATTORNEYS T. A. STEINMETZ.

AUTOMATIC DUPLICATING MACHINE- APPLICATION FILED SEPT. 1 l, 1920.

1,401,826. Patented Deu.'27, 1921.

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. THEODDBE A. STETNMETZ, 0L? EAU CLAIRE, WISCONSIN, ASSIGNOB OE ONE-HALETO ARTHUR L. :EAYNE, 8F EAU CLAIRE, WISCONSIN.

I AUTGMATTC DUPLICATING-MACHINE.

LQQlfiQfi Specification of Letters Patent.

Patented Dec. at, 1921.

Application filed September 11, 1920. Serial No. 499,734.

T 0 aZZ whom it may concern Be it known that T, THEODORE A. STEIN- METZ,a citizen of the United States, and resident of Eau Claire, in thecounty of Eau Claire and State of Wisconsin, have invented a new andImproved Automatic Duplicating-Machine, of which the following is afull, clear, and exact description.

It is well appreciated that numerous duplicating machines have beenplaced upon the market. These devices usually included a tracing armwith which an arm, supporting a cutter member is associated. Both ofthese arms are either capable of movement one in proportion to theother,'or a tracing of the work to be cut is moved under these arms insuch a manner that the tracing or pattern lies under the tracing arm,and the work to be cut underlying the cutter arm, so that the work isoperated upon in the manner desired.

These machines, aside from the operation of the cutting wheel, areoperated manually, it being incumbent upon theoperator to move thetracingarm over the pattern, or tracing, or in the instance of the othermachine being used, to move the pattern under the tracing arm.

Aside from this difficulty, cutting machines heretofore constructed havewith difficulty, duplicated the work to be cut, the details such asdepressions, etc, of the pattern.

This difficulty is to be attributed to the uncertainty of manualoperation, in that an operator may bear more heavily upon the tracingarm over a certain depression than over others, thus causing thevariance described. 1

It will also be understood, that aside from depressions, etc., that avariation is liable to occur in connection with the side edges of apattern due to the same defect heretofore enumerated.

With this defect in mind, I have con structed a machine in whichduplication will be effected, which duplication may be relied upon to.be an accurate reproduction of the pattern.

A further object of my'invention is the construction of a machine ofthis type which shall be entirely automatic inoperation, aside fromstarting and stopping the same,

so that the defects incident to the human equation are eliminated.

A still further object of my invention is the construction of a deviceof the type specified, which shall be entirely simple in the arrangementof its parts and in operation, so, that no difficulties due to acomplication of mechanical movements may be experienced.

Reference is had to the attached sheets of drawings as illustrating onepractical embodiment of my invention, and in which, Figure 1 18 anenlarged partly sectional side view of an automatic duplicating ma chineconstructed in accordance with my in: vention.

Fig. 2 is a sectional front view taken along the line 22 of Fig. 1.

Fig. 3 is a plane view of the machine, and

Fig. 4: is an enlarged partly sectional side view of a certain detail ofconstruction.

In these views the reference numeral 5 indicates legs of any suitablecharacter, which support the base 6, it'being noted that a furthersupporting bar 7 is provided, which supporting bar conveniently extendsbetween horizontal braces 8.

Journal boxes 9 are secured to one of the legs 5, and supporting bar 7,so asto-pro- A pair of arms 17 are now conveniently provided, which armsrockingly engage the shaft 12, at one of their ends, and areconveniently connected together as at 18 adjacent their opposite ends,and serve to support, adjacent these latter ends, a tracing wheel 19 ofany desirable construction, and a cutter or other desirable member 20,which latter is secured to a shaft-21 mounting a pulley 22 over whichthe belt 16 passes.

a further pulley 23 is also driven by the operation of the belt 13, anda belt 21 passing around this pulley serves to transmit power to asecond pulley 25 as inFigs.

l and 3. This latter pulley is in turn mounted upon the shaft 10 andturns the l together with a gear 26, whicl of the fact that itcooperates wheel 27, serves to rotate this latter A pitman 28 has oneoi: ends r secured as at 29 to the gear whee opposite end engaging thecrank sector gear 31, rockingly secured base 6, as has been indicated bythe r ence numeral 32.

'lhe base 6 is conveniertly dove-tailed recesses in which is slidablymounted, such with a deck 3% which, by tailed recesses formed inillustrated in l, is a upon the table, and in a direction. to the motionpermitted on the or table 33.

In this connection, it is to be noted that the deck 34 is moved andretained in its proper position by virtue or a traveler, comprising anextension 85 formed with a screw threaded opening through which a screwthreaded bar 36 extends, the latter being rotatably mounted by havingits ends project through openings in the table 38.

It is now to be noted that by virtue of the sector gear 31 engaging therack 37, which latter forms a part of the table 33, that a rotary motionof the gear wheel 2'? is translated into a reciprocating ll'lOLiOlll onthe part of the table, it being further appreciated that by virtue ofthe relative sizes of the pulleys, i l, 15 and 22, and the re ductiongearing composed of the gear 26 and gear wheel 27, that the drivetransmitted by virtue of the belt 13 will result in a rapid rotarymotion on the part of the cutter 20, and a relatively slow reciprocatingmotion on the part of the table 33 and the deck 34 carried thereby.

To now provide means whereby the deck 34 of the table 33 will be shiftedtransversely with respect to the table, and at the same timeautomatically, attention i invited to the construction shown in 1 and 2in which it will be seen that rat end of the screw threaded rod 36projecting beyond the table 33 mounts a ratchet 38 engaged by springpressed pawls 39, which latter are rockingly secured to stops ll whichmay be longitudinally adjusted with respect to the base (3. These stopslie in the line of travel of the ratchet 38, and slightly bey nd thelimit of travel Of the same. i

It will be obvious that upon the table reciprocating in the manneratoredcscribed, that the ratchet 38 will be engaged by the lowerand-upper most pawls carried the opposite stop 41, so that a rotation isimparted to the bar 36 upon the table 37 reaching the limit of itstravel either tract the deck of the table if this should be desired.

By this construction, it will be an ated that patt rn such as has bee;ii cated in dotted lines in l i piece of work may be secured to the deckoil so the table, and the mach ne set in operation.

The tracing wheel 9 will be raised upon. the edge of the pattern movingreund r, and will subsequently tollow any depres sions, etc, in the faceor"- the pattern, and will again be lowered upon the rear edge of thepattern moving beyond the tracing wheel 19.

This, as will be appreciated, will cause the cutter 20'to movecorrespondingly, and it will be understood that a perfect reproductionof the pattern will be made by means of this latter element, for thereason that the table, aside from its reciprocating action, has its deckmoving transversely upon it, thus permitting the tracing wheel to moveover every part of the pattern to be cut.

Finally it will be understood that it might be desirable to provide acertain medium whereby the tracing wheel might be supported out orcontact of the deck 34 with the table 33, and with this in view, theconnecting portion 18 extending between the arms 1? has convenientlyassociated with it, set screw 44- capable of being operated by means ofa knurled head 45.

It will be obvious that this screw which passes through the connectingportion l8and engages the same may be adjusted longitudinally so as toprovide the result desired.

Also it will be seen, reference being invited to Figs. 1 and l, that therear edge of the deck 34 is provided with a series of openings d6 any ofwhich may receive pins 4-7. Further, lever 48 is associated with themachine, which lever, upon being rocked, serves to operate a crank arm50, in turn connected to a rod 51, which latter may be coupled with acircuit breaker (not shown). From the foregoing it will be seen that byarranging the, pins 4:? within the proper openings 46 that these pinsmay be caused to operate the circuit breaker, thus resulting in thestoppage of the entire apparatus.

Thus l have constructed a cutting machine which shall be entirely simplein construction, and capable of duplicating a pattern automatically.

Obviously numerous modifications of structure might readily be resortedto without in the least departing from the spirit of my invention, whichI claim is:

1. An automatic duplicating machine, including a base, a table slidablewithin said base, a rack secured to said table, a sector gear engagingsaid rack, means for rocking said sector gear whereby to reciprocatesaid table, a deck secured to said table, a screw threaded rod rotatablymounted upon said table, means providing engagement between the deck ofsaid. table and said rod, a pair of stops secured to said base, aratchet carried by said rod, a pawl carried by each of said stops andadapted to engage said ratchet when said table is reciprocated, wherebysaid rod will be rotated to move the deck of the gear engaging saidrack, means for rocking said sector gear'whereby to reciprocate saidtable, a deck secured to said table, a screw threaded rod rotatablymounted upon said table, means providing engagement between the deck ofsaid table and said rod, a pair of stops adjustably secured to saidbase, a ratchet carried by said rod, a pawl carried by eachof saidstops, each of saidpawls being adapted to engage said ratchet when thetable is reciprocated, whereby said rod will be rotated to move the deckof the table,

and a cutter and tracing member adapted to overlie saiddeck.

THEODORE A. STEINMETZ.

